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  1. World War I: Summary, Causes & Facts | HISTORY

    Oct 29, 2009 · World War I, also known as the Great War, started in 1914 after the assassination of Archduke Franz Ferdinand of Austria. His murder catapulted into a war across Europe that …

  2. World War I - Wikipedia

    At the start of the war, German cruisers were scattered across the globe, some of which were subsequently used to attack Allied merchant shipping. These were systematically hunted down …

  3. World War I - Encyclopedia Britannica

    Nov 17, 2025 · What was the main cause of World War I? World War I began after the assassination of Austrian archduke Franz Ferdinand by South Slav nationalist Gavrilo Princip …

  4. The causes of World War I: Explained simply - History Skills

    In 1914, a chain of events set off by the shot of a lone assassin in Sarajevo plunged the world into its first truly global conflict. However, the reasons of this catastrophe ran far deeper than just …

  5. The Causes of WWI - World History Encyclopedia

    May 15, 2025 · Which event started World War I? The event that started WWI was the assassination of Archduke Franz Ferdinand, heir to the Habsburg throne, by a Bosnian Serb …

  6. How and why did World War One start? - BBC Bitesize

    Discover how country alliances led to World War One and why the great war started in this BBC Bitesize history KS2 guide.

  7. The causes of the First World War - Imperial War Museums

    The assassination of Austrian archduke Franz Ferdinand sparked the start of the First World War. But what happened next and why did Britain get involved?

  8. World War I Begins - Division of Historical and Cultural Affairs ...

    At the dawn of the 20 th century, few anticipated a global war, but what came to be known as the Great War began on June 28, 1914, with the assassinations of Austrian Archduke Franz …

  9. The Story Of World War I | History | Geography

    Aug 5, 2025 · World War I, or the Great War, began in 1914, following the assassination of Archduke Franz Ferdinand of Austria. This one event triggered a chain of events among …

  10. The First World War: Why It Started and How It Changed the …

    "Explore the complete story of the First World War in this detailed 38-minute video. Learn why WWI started, the main countries involved, and what each of the...